To calculate the standard deviation of the mismatch for two devices, you would typically follow these steps:
Collect Data: Obtain measurements or data points from both devices under the same conditions or tests.
Calculate the Differences: For each corresponding data point from the two devices, calculate the difference between them. If Device A has measurements A1, A2, ..., An, and Device B has measurements B1, B2, ..., Bn, then the differences would be D1 = A1 - B1, D2 = A2 - B2, ..., Dn = An - Bn.
Calculate the Mean: Find the average of all the differences calculated in step 2. This is done by summing all the differences and dividing by the number of data points (n).
Calculate Variance: For each difference, subtract the mean (calculated in step 3) and square the result. Then, find the average of these squared differences.
spinning the wheel to solve the problem
Calculate Standard Deviation: The standard deviation is the square root of the variance calculated in step 4.
The formula for the sample standard deviation (used when dealing with a subset of data) is: